Brc System Exclusive Information; Alesis Brc System Exclusive; Opcodes; Global Parameter Edit Commands - Alesis ADAT BRC Service Manual

5.0 BRC SYSTEM EXCLUSIVE INFORMATION

The first release of the BRC System Exclusive information is dated August 31, 1993. This
document has been reprinted here for service center personnel to assist in helping BRC users with MIDI
and System Exclusive problems and questions.

5.1 Alesis BRC System Exclusive

In addition to MIDI Machine Control (MMC) commands, the BRC also responds to and sends
out Alesis system exclusive commands to access functions that are not addressed by MMC commands.
The BRC has the following MIDI System Exclusive format:
F0H
00H 00H 0EH
09H
aaH
bbH
data
F7H

5.1.1 Opcodes

The following opcodes are used in this document:
− Items in parentheses {} can be repeated multiple times.
− Items in square brackets [] are optional, depending upon preceding info.

5.1.2 Global Parameter Edit Commands

50H - TOGGLE GLOBAL PARAMETER
F0H 00H 00H 0EH 09H <dev#> 50H {<param> <data>} F7H
<data> - 0=Off, 7FH=On for all parameters
Parameters:
00 Auto Punch
01 Pre Roll
02 Post Roll
03 Digital I/O
04 Auto Play
05 Rehearse
06 Auto Input
07 All Safe
08 All Input
51H - EDIT GLOBAL PARAMETER
F0H 00H 00H 0EH 09H <dev#> 51H {<param> <data>} F7H
Parameters:
01 Pre Roll Time
<data> - 0..200 (0..C8H) cents represented as 2 bytes*
0000000a 0bbbbbbb a=bit7, 0bbbbbbb=bit6..0
02 Post Roll Time
Start-of-Exclusive
Alesis manufacturer ID
BRC product ID
Device id# (0..7EH, 7FH=all)
Opcode (0..7FH)
Data
End-of-Exclusive
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